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Two marbles are drawn randomly one after the other without replacement from a jar that contains...

Two marbles are drawn randomly one after the other without replacement from a jar that contains 3 red marbles, 9 white marbles, and 3 yellow marbles. Find the probability of the following events.
(a) A red marble is drawn first followed by a white marble.
The probability is : 27/210
(b) A white marble is drawn first followed by a white marble.
The probability is : 72/210
(c) A yellow marble is not drawn at all.
The probability is : ???

math   Statistics-And-Probability   
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Answer #1

Totel morbles 15 marble Red marbles 3 white marbles- ellow marbles ; 3 Red marble is daD rot follouseo b a cwhite marble 31(9

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